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overly large Hybrid?

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Unread postAuthor: jackssmirkingrevenge » Tue Sep 18, 2012 9:39 am

jonesy42 wrote:Good job Saddam hussein didn't get his hands on that bad boy!
Talk about weopons of mass destruction,... CRIKEY!
:lol:


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Unread postAuthor: D_Hall » Tue Sep 18, 2012 9:18 pm

jackssmirkingrevenge wrote:
jonesy42 wrote:Good job Saddam hussein didn't get his hands on that bad boy!
Talk about weopons of mass destruction,... CRIKEY!
:lol:


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Wood.... That gives me wood....
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 19, 2012 12:10 am

D_Hall wrote:Wood.... That gives me wood....


Ironically, the designer fed its predecessor wood :D

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Unread postAuthor: striker » Mon Oct 08, 2012 11:34 pm

Just an update on how Im going: the barrel has arrived as well as the flanges. Ill be sorting out the gas input and ignition ports this weekend and hopefully organise with my mate to weld it up for me before Xmas.

Ok im stuck, Ill admit it
If any one has a prior build with a heavy barrel and chamber or an idea supporting a heavy barrel and chamber but relatively collapsible Id certainly be interested to hear.
( needs to be break down for road transport here in nz)
It is going to be trailer mountable( and fireable- going to use it for elevation and traverse) but hopefully Ill beable to find a breakdown solution so it .
I took design inspiration from mobile chernobyl"s 10XGB frame but with 5 to 6m of shd40 80mm and another 25kg of chamber, I think the frame style should be over built.
Ill see if i can get a pic or two up, ( Im not a CAD or computer design type :(
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Unread postAuthor: D_Hall » Mon Oct 08, 2012 11:51 pm

Not collapsible, but that was the point of making VERA the odd shape that she is.... So that the gun itself is barely longer than the barrel. Thus, no need to break it down.
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 09, 2012 12:13 am

If you're firing at high angles, they this would be the most elementary solution:

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At lower angles, you definitely want some sort of recoil absorbing mechanism. The simplest way to do this is how artillery started off, mount the thing on wheels and let it run free - a simple welded frame and a pair of bicycle wheels should do the trick :)

... or you could go full howitzer: http://www.instructables.com/id/Howitzer-Potato-Cannon/

D_Hall wrote:no need to break it down.


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Unread postAuthor: MrCrowley » Tue Oct 09, 2012 1:47 am

striker wrote:(needs to be break down for road transport here in nz)
I knew there had to be other Kiwi's out there making hybrids. Where do you plan on firing this thing? I'm up in Auckland and have enough troubles finding places to shoot a ~2L hybrid. Even if I drive an hour up north, houses can still be within a few hundred metres of each other and I've seen "neighbours" come out on their decks to see what the noise is.

I guess if you have a farm and know your neighbours it's not that big of a deal but the AOS seem to get called out to rural properties fairly often for gun shots.

P.S. if you know of any good shooting areas around Auckland, let me know :D
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Unread postAuthor: striker » Tue Oct 09, 2012 2:00 am

Ive got mates places I fire real guns on out to 1000m+, a spud gun wont be a prob lol
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 09, 2012 3:39 am

MrCrowley wrote:Even if I drive an hour up north, houses can still be within a few hundred metres of each other and I've seen "neighbours" come out on their decks to see what the noise is.


I think you should be looking into fitting a suppressor of some sort.

This one was not particularly sophisticated, just big on volume, and worked a treat.

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You're unlikely to make it mouse-fart quiet, especially shooting beyond mach 1, but definitely can make it quiet enough for the "neighbours" to think it's something far away enough not to worry about.
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Unread postAuthor: striker » Fri Nov 30, 2012 5:41 pm

Ok ive just got back from getting the chamber and flanges welded up( pics to follow), looking in to the carriage system this afternoon but at this stage ill have to wait untill after xmas to sort the rest of the gas system etc, due to work ramping up to cover the xmas break
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Unread postAuthor: striker » Sat Dec 01, 2012 1:49 am

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all Ive got for now :lol:
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Unread postAuthor: jackssmirkingrevenge » Sat Dec 01, 2012 4:27 am

striker wrote:all Ive got for now :lol:


oooh... really all you need now is a spark plug and fill valve! Looking forward to hearing this project speak :D
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Unread postAuthor: striker » Sat Dec 08, 2012 8:28 pm

Ok, had half a day free, spark plug is in, gasport is in with tap and bayonet fitting, got the adjustable gas regulator and gauge, just need to sort the coil, portable compressor and the frame
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Unread postAuthor: striker » Fri Dec 21, 2012 2:56 pm

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Unread postAuthor: MrCrowley » Fri Dec 21, 2012 3:09 pm

Damn! How long until completion? :shock:
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